Apple’s RAW support is a bit of a mess. I know they are working on camera support and I expect new camera support to come quite soon. In the past they would ship new support with a new version of the OS, but I think now they are just shipping it as “mobile updates” that are downloaded in the background. I’m not a big fan of this, but I don’t get a vote 🙂
They will update this page when support is updated.